As Mythbusters taught us, the difference between science and screwing around is writing stuff down.
So, I've now got a P229 in 9mm (.380 long) and one with both a .40 barrel and .357 sig barrel. I have yet to shoot the 9mm.
My split times right now with the P229 in .40 are right at .33-35 seconds at 5-7 yds. That's basically the same as my P220 in .45. So, I'm wondering how much recoil is playing. Obviously the P220 vs P229 is not a perfect comparison, but now that I've got two of the same gun differing only in caliber...science time.
Any guesses on what, if any, improvement in split times I should see between factory 180gr .40 loads vs, say 115gr 9mm loads?